Specialty of Obstetrics & Gynecology

Chorionic biopsy is a diagnostic method consisting in obtaining a small amount of the placenta. The chorion is the outer casing surrounding the embryo and part of the future generation placenta. Through this test can be performed and molecular studies citogéncios fetal possible to observe chromosomal aberrations, in addition to biochemical analysis to observe hereditary metabolic disorders. The techniques used or aspiration through a needle inserted through the abdominal wall or through a catheter that is filtered through the cervix, under continuous ultrasound guidance. Chorionic villus sampling should be carried out on pregnant women over 12 weeks, women of advanced maternal age over 35 years; It has been produced change in the number of chromosomes in the embryo and pregnant women who have a family of alterations in the chromosomes personal and / or.